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#1
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RAM temperature sensors needed soon.
Cryptocoins may start using algorithms which can be executed fast only on CPU-RAM chips.
Problem with this is current hardware has no RAM temperature sensors ?!?!? Therefore I am requesting this feature to be added to new hardware as soon as possible. Bye, Skybuck. |
#2
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RAM temperature sensors needed soon.
This is probably a golden opertunity for companies like ASRock which have patents on or licenses patents on overheat protection circuitry for motherboards.
This type of invention/circuitry could and probably should be extended to RAM chips... to protect RAM chips against overheat. Full system shutdown is recommended. Also windows/bios and such need to be updated to give feedback of what happened after the shutdown and restart/reboot to diagnose the problem. Would be nice if windows event log has an entry like: "System shut down due to RAM overheating". Bye, Skybuck. |
#3
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RAM temperature sensors needed soon.
wrote:
This is probably a golden opertunity for companies like ASRock which have patents on or licenses patents on overheat protection circuitry for motherboards. This type of invention/circuitry could and probably should be extended to RAM chips... to protect RAM chips against overheat. Full system shutdown is recommended. Also windows/bios and such need to be updated to give feedback of what happened after the shutdown and restart/reboot to diagnose the problem. Would be nice if windows event log has an entry like: "System shut down due to RAM overheating". Bye, Skybuck. The idea has been around for a while. That article is from 12 years ago. You could tie a thermal sensor into the SMBUS that the SPD EEPROM uses. Someone has to write code to use it. https://www.eetimes.com/document.asp?doc_id=1299439 Intel has also had a RAM throttling capability, but I'm not aware of how, or if, it is used on normal motherboards. Module power dissipation (Kingston datasheet), is based on an industry standard cycle mix. Module power dissipation would rise, if there was a way to do continuous read or write cycles. NOP cycles or refresh cycles use less power. It's the fact that a DIMM does not run flat out, that keeps it cool. The DIMM burst size is designed for CPU cache lines. A burst might be in the 2/4/8 range. But maybe the RAM chip itself supports 128 or 256 cycles in a row. The chipset probably doesn't have such a mode designed into it, so it cannot abuse the DIMM on a whim. You could design a memory controller in an FPGA, to abuse a conventional memory chip if you wanted. But I thought Intel had some ability to measure cycle density, and signal when throttling might be needed. I've just never seen any exposure of this feature. It's never mentioned in any kind of technical discussions. The hottest memories were RAMBUS. But there was a reason for that. Each memory chip was sufficient to answer all queries. You could "focus" your query on a single chip on a RAMBUS RIMM, and that chip would get hot because of the *4W* power dissipation. The other seven chips in the "rank" would remain cool by comparison. It is because of this "hot chip" situation, only on RAMBUS, that RAMBUS RIMMs had heatsinks *riveted* to the DIMM. So a user could not remove the heatsink, and cause a chip to smoke. The metal cover was as much a heat spreader, as a chip cooler. The memories we use now, don't do that. All chips rise to the same temperature in a rank (assumes normal random computer patterns). The cooler is there to cool all the chips, rather than spread the heat away from a single hot chip. As a result, the cooler plates are not riveted. A user can remove them if they want. I saw a recent reference to this topic again, perhaps on some server motherboards. But the concept has been around long enough, I no longer pay attention to such articles. Paul |
#4
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RAM temperature sensors needed soon.
On Monday, November 5, 2018 at 4:15:04 PM UTC+8, Paul wrote:
The hottest memories were RAMBUS. But there was a reason for that. Each memory chip was sufficient to answer all queries. You could "focus" your query on a single chip on a RAMBUS RIMM, and that chip would get hot because of the *4W* power dissipation. The other seven chips in the "rank" would remain cool by comparison. It is because of this "hot chip" situation, only on RAMBUS, that RAMBUS RIMMs had heatsinks *riveted* to the DIMM. So a user could not remove the heatsink, and cause a chip to smoke. The metal cover was as much a heat spreader, as a chip cooler. The memories we use now, don't do that. All chips rise to the same temperature in a rank (assumes normal random computer patterns). The cooler is there to cool all the chips, rather than spread the heat away from a single hot chip. As a result, the cooler plates are not riveted. A user can remove them if they want. I saw a recent reference to this topic again, perhaps on some server motherboards. But the concept has been around long enough, I no longer pay attention to such articles. Paul I presume server ECC FBDIMMs run hotter - I have seen pizza boxes with fans directed over the memory modules. |
#6
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RAM temperature sensors needed soon.
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